EP1795148B1 - Implant dentaire - Google Patents

Implant dentaire Download PDF

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Publication number
EP1795148B1
EP1795148B1 EP06024672A EP06024672A EP1795148B1 EP 1795148 B1 EP1795148 B1 EP 1795148B1 EP 06024672 A EP06024672 A EP 06024672A EP 06024672 A EP06024672 A EP 06024672A EP 1795148 B1 EP1795148 B1 EP 1795148B1
Authority
EP
European Patent Office
Prior art keywords
screw thread
thread
dental implant
implant
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06024672A
Other languages
German (de)
English (en)
Other versions
EP1795148A1 (fr
Inventor
Tobias Grosse
Andreas Bauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dentaurum GmbH and Co KG
Original Assignee
Dentaurum JP Winkelstroeter KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dentaurum JP Winkelstroeter KG filed Critical Dentaurum JP Winkelstroeter KG
Publication of EP1795148A1 publication Critical patent/EP1795148A1/fr
Application granted granted Critical
Publication of EP1795148B1 publication Critical patent/EP1795148B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • A61C8/0025—Self-screwing with multiple threads
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0066—Connecting devices for joining an upper structure with an implant member, e.g. spacers with positioning means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0054—Connecting devices for joining an upper structure with an implant member, e.g. spacers having a cylindrical implant connecting part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection

Definitions

  • the invention relates to a dental implant having the features of the preamble of claim 1.
  • a dental implant with an implant neck for anchoring a body part and with an implant body having an external thread is known from the utility model DE 202 11 157 U1 known.
  • the thread core of the external thread decreases conically from crestal to apical in diameter, while the external diameter of the external thread remains constant over its entire length. From crestal to apical, therefore, the depth of the threads increases continuously.
  • a dental implant in which the thread core and outer diameter have three crestal apically successive sections, namely a crestal section of constant external diameter of male thread and apical tapered thread core, a central section of constant external diameter of external thread and constant diameter the thread core and a tip portion with apical in the conical outer diameter of the external thread and conical diameter of the threaded core.
  • an implant is known with an external thread that is formed from a first thread and a second thread, which merge into one another in a transversal border plane.
  • the thread spiral of the catchy first thread continues in the thread spiral of the three-thread second thread.
  • the second thread is formed as a fine thread with a smaller pitch from thread to thread than the first thread.
  • a dental implant is known with an implant neck for anchoring a body part and with an implant body having an external thread.
  • the external thread comprises a first and a second thread, which are superimposed on each other.
  • the second thread has a smaller thread-to-thread pitch than the first thread.
  • the flank diameter of the second thread is smaller than the flank diameter of the first thread, that is, the second thread superimposed on the first thread in the thread root.
  • a dental implant is described with an implant neck for anchoring a body part and with a cylindrical implant body with an external thread.
  • the external thread comprises a first and a second thread, which are superposed on each other over the entire length of the implant body.
  • the second thread has a smaller pitch from thread to thread than the first thread, and the pitch diameter of the second thread is greater than that of the first thread.
  • a dental implant is known with an implant neck for anchoring a body part and with an implant body having a cylindrical central threaded portion, which is followed by a tapered threaded portion in the apical direction.
  • the thread is designed double-threaded, wherein the two threads have different thread depths.
  • Object of the present invention is to develop a dental implant of the type mentioned in such a way that within a very short time stable anchoring in the jawbone can be achieved.
  • an external thread which is formed at least in a partial area by the superposition of a first and a second thread
  • the second thread causes a surface enlargement of the implant, accelerated by the ingrowth of the implant into the bone and loosening of the implant is prevented, especially after its insertion.
  • the second thread differs from the first thread by a smaller thread-to-thread pitch, that is, the second thread forms a fine thread, whereas the first thread represents a coarse thread with a relatively large pitch from thread to thread.
  • the pitch diameter of the second thread is greater than the pitch diameter of the first thread.
  • the two threads can also differ in their thread depth.
  • the thread depth of the second thread may be smaller than the thread depth of the first thread, so the thread depth of the first thread, for example, 0.3 to 0.5 mm, whereas the thread depth of the second thread may be less than 0.1 mm.
  • the second thread extends in the crestal direction beyond the first thread.
  • the first thread may terminate in the transition region between the implant body and the implant neck, and the second thread may extend in the crestal direction beyond the first thread and terminate at a distance from the crestal end of the first thread.
  • the first thread extends in an apical direction beyond the second thread.
  • the second thread terminates at a distance from the apical end of the dental implant, whereas the first thread may extend to this apical end.
  • the second thread is more common, it can be configured in particular four, five or six-shaped. As a result of the multiple passes, depending on the depth of the first thread, one or more threads of the second thread may lie directly next to each other. If the second thread extends beyond the first thread in the region of the implant neck, several threads of the second thread are shown next to one another on the expiring first thread on the neck of the implant. The smaller the depth of the first thread, the more clearly shows the second thread, and by the depth of the first thread and the depth of the second thread, the number of running on the first thread threads of the second thread is controllable.
  • the external thread comprises a cylindrical threaded section, followed by a conical threaded section in the apical direction.
  • the conical threaded portion extends to the apical end of the dental implant, so that it tapers continuously from the cylindrical threaded portion to its apical tip over the conical threaded portion.
  • the external thread extends into the area of the implant neck.
  • the implant body has an external thread
  • the implant neck is at least partially surrounded by the external thread.
  • the shape of the second thread different configurations are suitable, for example, can be used for the second thread a flank angle of 90 °.
  • the first thread is preferably designed to be catchy, the thread depth is preferably about 0.3 to about 0.5 mm.
  • the pitch of the first thread is preferably greater than 1 mm, for example, it may be about 1.5 mm to about 2 mm.
  • the second thread has 0.8 times to 1.2 times the pitch of the first thread. It can be provided, for example, that the second thread has the same pitch as the first thread.
  • the cone angle of the conical threaded portion is preferably less than 10 °, in particular it may be about 4 ° to about 8 °.
  • the length of the conical threaded section is less than one third of the total length of the dental implant.
  • a particularly stable anchoring in the bone at low stress thereof is achieved in a preferred embodiment of the invention in that the thread depth of the first thread in the conical threaded portion is greater than in the cylindrical threaded portion.
  • the thread depth of the first thread thus increases in the direction of the apical end of the dental implant.
  • the thread depth of the first thread may for example be 0.4 to 0.5 mm, whereas it may be less than 0.4 mm in the cylindrical threaded portion, in particular, it may be approximately 0.35 mm in the cylindrical threaded portion.
  • the implant neck crestal has an end portion free of external threads.
  • the length of the outer thread-free end portion is about 0.1 mm to about 2 mm.
  • the implant neck receives a body part in the usual way.
  • the implant neck has a flat end face, because this makes it possible to achieve good tightness between the abutment part and the dental implant.
  • the crestale end of the dental implant is chamfered, so it may have a bevel inclined at an angle to the plane of the end face.
  • the angle may be for example 5 ° to 45 °, in particular about 20 ° to about 40 °.
  • a mounting part which can be placed onto the dental implant can be automatically centered with a complementary chamfer.
  • an increased tightness between body part and dental implant is achieved.
  • the outer diameter of the flat end face is reduced.
  • the implant neck has a recess with a rotation lock.
  • the body part can be used, and by the rotation assurance ensures that body part and dental implant in a structurally simple manner are rotatably connected to each other.
  • an antirotational device for example, an internal polygon can be used, for example, an inner hexagon or an inner pentagon.
  • the anti-rotation device has uniformly distributed round teeth over the inner circumference of the recess.
  • the anti-rotation device may include, for example, an internal toothing in the manner of an inner-five-round.
  • the dental implant has at least one longitudinal groove on the outside.
  • the longitudinal groove advantageously extends from the apical end of the dental implant to the level of the implant neck. It serves as a drain and reservoir for tissue fluid and bone chips when screwing in the dental implant and takes over the function of an anti-rotation device after ingrowth of the dental implant.
  • the longitudinal groove is formed by two angularly aligned side walls.
  • the side walls may be oriented perpendicular to each other, wherein a first side wall preferably extends in a radial plane of the cylindrical threaded portion.
  • the surface of the dental implant is preferably roughened in the region of the external thread.
  • the roughening achieves an improved anchoring of the dental implant in the bone due to the enlargement of the implant surface.
  • the surface roughening accelerates the ingrowth of the implant into the bone and prevents rotational movement immediately after the insertion of the implant. It can thus be achieved a good primary stability.
  • a dental implant 10 according to the invention is shown with a cylindrical implant neck 12, which is adjoined in the apical direction by an implant body 14 whose apical end is rounded.
  • the implant neck 12 has a recess 16, which opens into a flat end face 18 of the implant neck 12 and into which a pin-shaped end piece of a known per se and therefore not shown in the drawing body part can be used.
  • a pin-shaped end piece of a known per se and therefore not shown in the drawing body part can be used.
  • the apical direction closes to the Ausnehumg 16 a blind bore with an internal thread 20 for screwing the body part.
  • the recess 16 Adjacent to the end face 18, the recess 16 has an anti-rotation device in the form of an internal pentagonal-shaped internal toothing 22, which serves as a form-locking element for an implanting tool and, moreover, as an anti-rotation element for the mounting part to be used.
  • the dental implant 10 is surrounded by an external thread 26 which has a cylindrical threaded portion 28 extending from the implant neck 12 and a conical threaded portion 30 adjoining it in an apical direction.
  • the unthreaded end portion 24 comprises a cylindrical portion 25 and a crestal direction adjoining this frusto-conical portion 27 which extends to the end face 18 and an angle ⁇ of, for example, 30 ° to the plane of the end face 18 inclined bevel 29 is formed.
  • the cylindrical threaded portion 28 of the external thread 26 is formed by the superposition of a first thread 32 and a second thread 34.
  • the two threads 32 and 34 have the same outer diameter, but the thread depth of the second thread 34 is smaller than the thread depth of the first thread 32 and the pitch diameter of the second thread 34 is greater than the pitch diameter of the first thread 32.
  • the first thread 32 forms Coarse thread from relatively large distance between its threads, whereas the second thread 34 forms a fine thread with a much smaller distance between its threads.
  • the second thread 34 extends in the crestal direction beyond the first thread 32 out to the edge of the externally thread-free end portion 24. In the region of the implant body 14, the second thread 34 extends only in the cylindrical threaded portion 28, whereas the first thread 32 in apical Direction beyond the second thread 34 also extends to the apical end of the dental implant 10.
  • the thread depth of the first thread 32 is less than in the conical threaded portion 30, in the former range, the thread depth is in the illustrated embodiment 0.356 mm, whereas the thread depth in the conical threaded section is 0.433 mm.
  • the second thread 34 is designed to be more continuous, in the illustrated embodiment it is four-start, whereas the first thread 32 is formed catchy.
  • the slopes of the two threads 32 and 34 are the same, they are in the illustrated embodiment, each 1.7 mm.
  • a first longitudinal groove 36 which is formed by two mutually perpendicular side walls 37, 38, wherein the side wall 37 relative to the cylindrical threaded portion 28 in a radial plane runs.
  • the dental implant 10 comprises a second longitudinal groove 40, which is configured corresponding to the first longitudinal groove 36 and preferably diametrically opposite the first longitudinal groove 36.
  • the surface of the dental implant 10, this is not shown in the drawing, is roughened in the region of the external thread 36, for example by irradiation of the dental implant 10 with corundum particles and / or by etching of the dental implant.
  • the roughened external thread 26 which is formed in the region of the cylindrical threaded portion 28 from the superposition of a first thread 32 with a relatively large distance between its threads and a second thread 34 with a relatively small distance between the threads, a very good anchoring of Dental implant 10 achieved in the bone.
  • the second thread 34 causes a considerable increase in surface area of the dental implant 10 and allows a particularly uniform load on the surrounding bone tissue, so that local stress spikes, which could lead to bone loss can be avoided.
  • FIG. 3 a second embodiment of a dental implant according to the invention is shown, which is generally designated by the reference numeral 50. It is designed substantially identical to the above-described dental implant 10, for identical components are therefore in FIG. 3 the same reference numerals as in the FIGS. 1 to 2 and with respect to these components, reference is made to the foregoing explanations to avoid repetition.
  • the dental implant 50 differs from the dental implant 10 only in that the outer thread-free end portion 24 of the implant neck 12 is formed as a solid cylinder and has virtually no chamfer, as used in the dental implant 10 is used.
  • the dental implant 50 is characterized by an external thread 26 which consists in a cylindrical threaded portion 28 of the superposition of a first thread 32 and a second thread 34 through which a particularly good anchoring is achieved.

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  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)
  • Dental Preparations (AREA)
  • Materials For Medical Uses (AREA)

Claims (13)

  1. Implant dentaire comprenant une collerette d'implant (12) pour l'ancrage d'une pièce rapportée, et comprenant un corps d'implant (14) qui présente un filetage extérieur (26), le filetage extérieur (26) englobant un premier filetage et un deuxième filetage (32, 34), qui sont mutuellement superposés dans au moins une zone partielle du filetage extérieur, et le deuxième filetage (34) présente une distance de filet à filet plus faible que le premier filetage (32) et le diamètre sur flancs du deuxième filetage (34) est plus grand que le diamètre sur flancs du premier filetage (32), le filetage extérieur (26) présentant un tronçon de filetage cylindrique (28) auquel se raccorde, en direction apicale, un tronçon de filetage conique (30), et le deuxième filetage (34) s'étend, dans la direction crestale, par-dessus le premier filetage (32), et le premier filetage (32) s'étend, dans la direction apicale, par-dessus le deuxième filetage (34), et le deuxième filetage (34) est à filets multiples, caractérisé en ce que le tronçon de filetage cylindrique (28) est formé, dans la zone du corps d'implant (14), par la superposition du premier filetage (32) et du deuxième filetage (34).
  2. Implant dentaire selon la revendication 1,
    caractérisé en ce que le filetage extérieur (26) s'étend jusque dans la zone de la collerette d'implant (12).
  3. Implant dentaire selon la revendication 1 ou la revendication 2, caractérisé en ce que le deuxième filetage (34) présente un pas de 0,8 fois à 1,2 fois le pas du premier filetage (32).
  4. Implant dentaire selon l'une des revendications précédentes, caractérisé en ce que le premier filetage (32) est à un seul filet.
  5. Implant dentaire selon l'une des revendications précédentes, caractérisé en ce que la profondeur de filet du premier filetage (32) est plus grande dans le tronçon de filetage conique (30) que dans le tronçon de filetage cylindrique (28).
  6. Implant dentaire selon l'une des revendications précédentes, caractérisé en ce que la collerette d'implant (12) présente, côté crestal, un tronçon d'extrémité (24) exempt de filetage extérieur.
  7. Implant dentaire selon l'une des revendications précédentes, caractérisé en ce que la collerette d'implant (12) présente une surface frontale (18) plane.
  8. Implant dentaire selon l'une des revendications précédentes, caractérisé en ce que l'extrémité crestale de l'implant dentaire est chanfreinée.
  9. Implant dentaire selon l'une des revendications précédentes, caractérisé en ce que la collerette d'implant (12) comporte un évidement (16) avec un système d'arrêt de rotation (22).
  10. Implant dentaire selon la revendication 9,
    caractérisé en ce que le système d'arrêt de rotation comprend des dents rondes réparties régulièrement le long de la périphérie intérieure de l'évidement (16).
  11. Implant dentaire selon l'une des revendications précédentes, caractérisé en ce que l'implant dentaire (10) présente sur le côté extérieur, au moins une rainure longitudinale (36, 40).
  12. Implant dentaire selon la revendication 11,
    caractérisé en ce que ladite au moins une rainure (36, 40) est réalisée par deux parois latérales (37, 38) orientées de manière à former un angle l'une par rapport à l'autre.
  13. Implant dentaire selon l'une des revendications précédentes, caractérisé en ce que la surface de l'implant dentaire (10) a été rendue rugueuse dans la zone du filetage extérieur (26).
EP06024672A 2005-12-01 2006-11-29 Implant dentaire Active EP1795148B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005058496A DE102005058496A1 (de) 2005-12-01 2005-12-01 Dentalimplantat

Publications (2)

Publication Number Publication Date
EP1795148A1 EP1795148A1 (fr) 2007-06-13
EP1795148B1 true EP1795148B1 (fr) 2010-03-10

Family

ID=37763825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06024672A Active EP1795148B1 (fr) 2005-12-01 2006-11-29 Implant dentaire

Country Status (3)

Country Link
EP (1) EP1795148B1 (fr)
AT (1) ATE460131T1 (fr)
DE (2) DE102005058496A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008004960U1 (de) * 2008-04-09 2009-08-13 Bego Implant Systems Gmbh & Co. Kg Temporäres Zahnimplantat
KR200443018Y1 (ko) * 2008-06-18 2009-01-07 주식회사 코텍 치과용 임플란트 픽스츄어
HUP1000220A2 (en) * 2010-04-20 2012-03-28 Zoltan Szakacs Externally threaded self-tapping dental implant with varying thread-profile
ITRM20110262A1 (it) * 2011-05-26 2012-11-27 Francesco Pace Impianto dentale protesico.
AT14617U1 (de) * 2012-12-10 2016-02-15 Ribaxx Ag Dentalimplantat mit einem Mikro- und einem Makrogewinde
DE102015103544A1 (de) * 2015-03-11 2016-09-15 Universität Basel Implantat, insbesondere Dentalimplantat
EP3909545A1 (fr) * 2020-05-15 2021-11-17 Ralf Masur Implant dentaire enossal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0826343A2 (fr) * 1994-08-15 1998-03-04 Shedrick D. Jones Méthode et appareil pour l'encastrement d'un implant en tissu osseux
EP1709937A1 (fr) * 2005-04-05 2006-10-11 Dinkelacker, Wolfgang, Dr. med. dent. Implant dentaire en forme de vis

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Publication number Priority date Publication date Assignee Title
US4103422A (en) 1975-03-07 1978-08-01 Oratronics, Inc. Threaded self-tapping endodontic stabilizer
IT1307923B1 (it) * 1999-01-25 2001-11-29 Hofmann S A S Di Roberto Hofma Dispositivo di impianto dentale endosseo.
SE516282C2 (sv) * 2000-04-04 2001-12-10 Nobel Biocare Ab Implantat försett med anslutnings- och hålisättningsdelar samt förfarande vid dylikt implantat
SE0102749D0 (sv) 2001-08-15 2001-08-15 Astra Tech Ab Implant, arrangement comprising an implant, and method for inserting said implant in bone tissue
US20040033469A1 (en) * 2002-08-15 2004-02-19 Blacklock Gordon D. Dental implant anchor having internal/external wrench engaging means
DE10251469B4 (de) * 2002-11-05 2007-07-12 Gebr. Brasseler Gmbh & Co. Kg Zahnimplantat
DE102004017344A1 (de) * 2004-04-06 2005-11-03 Schröder, Ralf, Dr. Dentalimplantat mit Außengewinde

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0826343A2 (fr) * 1994-08-15 1998-03-04 Shedrick D. Jones Méthode et appareil pour l'encastrement d'un implant en tissu osseux
EP1709937A1 (fr) * 2005-04-05 2006-10-11 Dinkelacker, Wolfgang, Dr. med. dent. Implant dentaire en forme de vis

Also Published As

Publication number Publication date
ATE460131T1 (de) 2010-03-15
DE102005058496A1 (de) 2007-06-06
EP1795148A1 (fr) 2007-06-13
DE502006006387D1 (de) 2010-04-22

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